Melissa & Doug Sticker WOW!™ is a whole new way to play with stickers! Pop the convenient sticker stack of 200 assorted pets stickers into any Sticker WOW!™ Sticker Stamper cartridge (sticker stamper not included), and stamp, stamp, stamp through 24 mini pages (approximately 2.25 by 4.25 inches) of fun-filled pets-themed counting and matching activities. With 100 unique designs in the sticker stack, each sticker stamped is a surprise. Sticker WOW!™ refill stickers are not reusable but are easy to remove if necessary and are great for creative arts and crafts projects. Pets refill stickers are a natural complement to the Dog and Cat Sticker WOW!™ sticker stampers, but they are compatible with all the cute and collectible Sticker WOW!™ sticker stampers. Sticker WOW!™ (patent pending) promotes fine motor skills, encourages creative play, and it's satisfying, fidget fun!